Frames go into single digits while using AR effects with games that use nearly 100% GPU

[TheRealDadbeard]

For some reason OBS does not reserve more GPU cycles while using AR actions. This only happens in games that go near 100% usage. I have been using OBS since W11 only with HAGS enabled and no admin and such an issue does no occur in normal use.

What happens is that I see that OBS framerate drops to arund 52fps but the output is a total slideshow. Mind you the game is already running at full usage and this never happens without the effect as OBS reserves enough cycles but doesn't seem to do that with the effect enabled.

I have a log and a clip how it looks.

https://www.twitch.tv/dadbeard87/clip/AttractiveVenomousPeafowlArsonNoSexy-qZGn7Y3JeyTVZI7q

2025-10-05 20-35-13.txt

[TheRealDadbeard]

Any updates on this issue? It's really weird as OBS tells it enocder overload but it should just take some more cycles but the biggest problem is reporting 55fps but stream just gets a slideshow

[exeldro]

AR effects are done on the GPU. OBS does not reserve cycles on the GPU it just gives tasks to the GPU hoping they are done in time. When the GPU is busy with other things those tasks will take longer. AR tasks are heavier than normal OBS tasks.

[TheRealDadbeard]

That's fine but the big issue is that there output then is like a slideshow for whatever reason as seen in the clip above. Even if OBS reports 55fps.

Is this an OBS Problem or caused by the plugin? I remember not having that kind of slideshow.

[exeldro]

55 fps rendering does not mean 55 fps output. After rendering there is encoding and that can be slower.

[TheRealDadbeard]

Hmm okay but why would it drop so extremely low to virtually 2fps? Anything I can do to mitigate that? Opening an issue on OBS side? It's just one AR action a 4070ti that should not be an issue at all.